Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Quantas tentativas têm objetivos maiores que 0?
 ###Tabelas: CREATE TABLE emigration_of_jews_and_their_family_members_from_the_former_ussr: (emigration_of_jews_and_their_family_members_from_the_former_ussr:_id AUTO_INCREMENT PRIMARY KEY, Year VARCHAR, Total (000s) INT, Israel INT, Germany INT, Jews (Halakha) in Israel VARCHAR) CREATE TABLE canterbury-bankstown_bulldogs (canterbury-bankstown_bulldogs_id AUTO_INCREMENT PRIMARY KEY, Year VARCHAR, Matches INT, Tries INT, Goals INT, Points INT) CREATE TABLE tournament_for_the_championship_of_canada (tournament_for_the_championship_of_canada_id AUTO_INCREMENT PRIMARY KEY, Players VARCHAR, Games Won INT, Games Lost INT, Total points INT, Grand Average VARCHAR, Best Winning Average VARCHAR, Best Run INT) CREATE TABLE female_names (female_names_id AUTO_INCREMENT PRIMARY KEY, Region (year) VARCHAR, No. 1 VARCHAR, No. 2 VARCHAR, No. 3 VARCHAR, No. 4 VARCHAR, No. 5 VARCHAR, No. 6 VARCHAR, No. 7 VARCHAR, No. 8 VARCHAR, No. 9 VARCHAR, No. 10 VARCHAR) CREATE TABLE european_tour_wins_9 (european_tour_wins_9_id AUTO_INCREMENT PRIMARY KEY, Date VARCHAR, Tournament VARCHAR, Winning score VARCHAR, To par VARCHAR, Margin of victory VARCHAR, Runner(s)-up VARCHAR)  
SELECT SUM Tries FROM canterbury-bankstown_bulldogs WHERE Goals > 0